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-
+# 从本地文件中加载数据
+
+This tutorial demonstrates how to load data into Apache Druid from a file using Apache Druid's native batch ingestion feature.
+
+You initiate data loading in Druid by submitting an *ingestion task* spec to the Druid Overlord. You can write ingestion
+specs by hand or using the _data loader_ built into the Druid console.
+
+The [Quickstart](./index.md) shows you how to use the data loader to build an ingestion spec. For production environments, it's
+likely that you'll want to automate data ingestion. This tutorial starts by showing you how to submit an ingestion spec
+directly in the Druid console, and then introduces ways to ingest batch data that lend themselves to
+automation—from the command line and from a script.
+
+
+## Loading data with a spec (via console)
+
+The Druid package includes the following sample native batch ingestion task spec at `quickstart/tutorial/wikipedia-index.json`, shown here for convenience,
+which has been configured to read the `quickstart/tutorial/wikiticker-2015-09-12-sampled.json.gz` input file:
+
+```json
+{
+ "type" : "index_parallel",
+ "spec" : {
+ "dataSchema" : {
+ "dataSource" : "wikipedia",
+ "dimensionsSpec" : {
+ "dimensions" : [
+ "channel",
+ "cityName",
+ "comment",
+ "countryIsoCode",
+ "countryName",
+ "isAnonymous",
+ "isMinor",
+ "isNew",
+ "isRobot",
+ "isUnpatrolled",
+ "metroCode",
+ "namespace",
+ "page",
+ "regionIsoCode",
+ "regionName",
+ "user",
+ { "name": "added", "type": "long" },
+ { "name": "deleted", "type": "long" },
+ { "name": "delta", "type": "long" }
+ ]
+ },
+ "timestampSpec": {
+ "column": "time",
+ "format": "iso"
+ },
+ "metricsSpec" : [],
+ "granularitySpec" : {
+ "type" : "uniform",
+ "segmentGranularity" : "day",
+ "queryGranularity" : "none",
+ "intervals" : ["2015-09-12/2015-09-13"],
+ "rollup" : false
+ }
+ },
+ "ioConfig" : {
+ "type" : "index_parallel",
+ "inputSource" : {
+ "type" : "local",
+ "baseDir" : "quickstart/tutorial/",
+ "filter" : "wikiticker-2015-09-12-sampled.json.gz"
+ },
+ "inputFormat" : {
+ "type": "json"
+ },
+ "appendToExisting" : false
+ },
+ "tuningConfig" : {
+ "type" : "index_parallel",
+ "maxRowsPerSegment" : 5000000,
+ "maxRowsInMemory" : 25000
+ }
+ }
+}
+```
+
+This spec creates a datasource named "wikipedia".
+
+From the Ingestion view, click the ellipses next to Tasks and choose `Submit JSON task`.
+
+
+
+This brings up the spec submission dialog where you can paste the spec above.
+
+
+
+Once the spec is submitted, wait a few moments for the data to load, after which you can query it.
+
+
+## Loading data with a spec (via command line)
+
+For convenience, the Druid package includes a batch ingestion helper script at `bin/post-index-task`.
+
+This script will POST an ingestion task to the Druid Overlord and poll Druid until the data is available for querying.
+
+Run the following command from Druid package root:
+
+```bash
+bin/post-index-task --file quickstart/tutorial/wikipedia-index.json --url http://localhost:8081
+```
+
+You should see output like the following:
+
+```bash
+Beginning indexing data for wikipedia
+Task started: index_wikipedia_2018-07-27T06:37:44.323Z
+Task log: http://localhost:8081/druid/indexer/v1/task/index_wikipedia_2018-07-27T06:37:44.323Z/log
+Task status: http://localhost:8081/druid/indexer/v1/task/index_wikipedia_2018-07-27T06:37:44.323Z/status
+Task index_wikipedia_2018-07-27T06:37:44.323Z still running...
+Task index_wikipedia_2018-07-27T06:37:44.323Z still running...
+Task finished with status: SUCCESS
+Completed indexing data for wikipedia. Now loading indexed data onto the cluster...
+wikipedia loading complete! You may now query your data
+```
+
+Once the spec is submitted, you can follow the same instructions as above to wait for the data to load and then query it.
+
+
+## Loading data without the script
+
+Let's briefly discuss how we would've submitted the ingestion task without using the script. You do not need to run these commands.
+
+To submit the task, POST it to Druid in a new terminal window from the apache-druid-{{DRUIDVERSION}} directory:
+
+```bash
+curl -X 'POST' -H 'Content-Type:application/json' -d @quickstart/tutorial/wikipedia-index.json http://localhost:8081/druid/indexer/v1/task
+```
+
+Which will print the ID of the task if the submission was successful:
+
+```bash
+{"task":"index_wikipedia_2018-06-09T21:30:32.802Z"}
+```
+
+You can monitor the status of this task from the console as outlined above.
+
+
+## Querying your data
+
+Once the data is loaded, please follow the [query tutorial](../tutorials/tutorial-query.md) to run some example queries on the newly loaded data.
+
+
+## Cleanup
+
+If you wish to go through any of the other ingestion tutorials, you will need to shut down the cluster and reset the cluster state by removing the contents of the `var` directory under the druid package, as the other tutorials will write to the same "wikipedia" datasource.
+
+
+## Further reading
+
+For more information on loading batch data, please see [the native batch ingestion documentation](../ingestion/native-batch.md).
+
+
+
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-
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## 加载本地文件